Closes#21043 by updating the documentation to remove specific CA
organizations and update the text to no longer need to tell you to
download root certificates, but instead use the OS certificates
avaialble through SSLContext.load_default_certs.
Closes#21013 by modfying ssl.create_default_context() to:
* Move the restricted ciphers to only apply when using
ssl.Purpose.CLIENT_AUTH. The major difference between restricted and not
is the lack of RC4 in the restricted. However there are servers that exist
that only expose RC4 still.
* Switches the default protocol to ssl.PROTOCOL_SSLv23 so that the context
will select TLS1.1 or TLS1.2 if it is available.
* Add ssl.OP_NO_SSLv3 by default to continue to block SSL3.0 sockets
* Add ssl.OP_SINGLE_DH_USE and ssl.OP_SINGLE_ECDG_USE to improve the security
of the perfect forward secrecy
* Add ssl.OP_CIPHER_SERVER_PREFERENCE so that when used for a server side
socket the context will prioritize our ciphers which have been carefully
selected to maximize security and performance.
* Documents the failure conditions when a SSL3.0 connection is required so
that end users can more easily determine if they need to unset
ssl.OP_NO_SSLv3.
Closes#20995 by Enabling better security by prioritizing ciphers
such that:
* Prefer cipher suites that offer perfect forward secrecy (DHE/ECDHE)
* Prefer ECDHE over DHE for better performance
* Prefer any AES-GCM over any AES-CBC for better performance and security
* Then Use HIGH cipher suites as a fallback
* Then Use 3DES as fallback which is secure but slow
* Finally use RC4 as a fallback which is problematic but needed for
compatibility some times.
* Disable NULL authentication, NULL encryption, and MD5 MACs for security
reasons
- based on pip and other PyPA tools
- includes references to the new Python Packaging User Guide
where appropriate (and the relevant section is at least
partially filled in)
- started new FAQ sections
- both guides aim to introduce users to basic open source
concepts if they aren't aware of them
- existing guides have been relocated (now linked from the
distutils docs) rather then removed, since there is
some needed material that has yet to be relocated to the
distutils docs as a reference for the legacy formats
Also tweaked the docs a bit to use our standard style for
versionadded/changed. (I'm guessing there are other places
in the multiprocessing docs where similar tweaks should be made.)
I decided to leave the (slightly expanded) Other Improvements
entry as well, since someone looking for command line behavior
changes isn't going to look in the 'sys' module section.
Also updated the base64 module title and introduction to adjust for
the fact that these new encodings are included.
Also adjusted the wording about the base64 alphabets (see
issue #20837).
Donald Stufft
Georg Brandl
Antoine Pitrou
Victor Stinner
Benjamin Peterson
Zachary Ware
Éric Araujo
R David Murray
Nick Coghlan